UV Hits Extreme 11 on Friday Before Settled but Cooler Weather Builds Through Next Week
The forecast for Arrecife opens Friday 12 June with 29°C under clear skies and the UV index reaching 11, the extreme classification on the World Health Organization scale. Saturday holds at 28°C with UV 10 and the first hints of cloud building during the evening. Temperatures then ease gradually through the week, dropping to 27°C on Sunday, 25°C on Monday, and holding at 26°C through Tuesday and Wednesday. Overnight minimums stay consistent at 18 to 19°C throughout the period.
Lanzarote weather forecast
12 - 17 June 2026Source: AEMET (Spanish State Meteorological Agency)
| Day | Low | High | Conditions | UV | Rain |
|---|---|---|---|---|---|
|
Friday
12 June · Extreme UV
|
18°C | 29°C | 11 | 0% | |
|
Saturday
13 June
|
18°C | 28°C | 10 | 20% | |
|
Sunday
14 June
|
19°C | 27°C | 10 | 10% | |
|
Monday
15 June
|
19°C | 25°C | 10 | 0% | |
|
Tuesday
16 June
|
19°C | 26°C | 15% | ||
|
Wednesday
17 June
|
19°C | 26°C | 5% |
Conditions are forecast to be largely settled across the weekend, with clear skies and steady easterly to northerly trade winds running at 10 to 25 km/h. Cloud cover develops gradually from Saturday evening through to Sunday, with the first small chance of overnight rain appearing late on Saturday before clearing through Sunday afternoon. Tuesday and Wednesday bring more persistent cloud cover and a slight increase in the chance of light rain, although the probabilities remain modest at 15 and 5 percent respectively.
Extreme UV on Friday the Big Safety Story
The single most important element of this week's forecast is the UV index of 11 on Friday, which falls into the extreme category on the World Health Organization scale. At that level, unprotected skin can burn within 10 to 15 minutes during peak hours, and eye damage can occur without proper UV-blocking sunglasses. Saturday, Sunday and Monday all hold at UV 10, classified as very high, which is still well above the threshold at which sun protection becomes essential rather than optional.
The combination of comfortable air temperatures in the high 20s with extreme UV readings can be particularly deceptive. Visitors enjoying a breeze on the beach or by the pool can easily lose track of how much sun they are getting, because the heat itself isn't pushing them into the shade the way last month's 34°C heatwave did. The result is often a worse burn than during the recent peak heat, when most people instinctively retreated indoors during the middle of the day.
Day-by-Day Outlook for Arrecife
Friday 12 June opens the period with 29°C, clear skies through the morning and afternoon, and UV reaching the extreme reading of 11. Light easterly winds at 15 to 20 km/h provide minimal cooling, and the day demands proper sun protection from morning onwards. Saturday 13 holds at 28°C with mostly clear skies, but cloud begins to build during the evening and there is a 20 percent chance of light rain overnight. Northerly winds run at 10 to 20 km/h.
Sunday 14 brings 27°C with intervals of cloud during the morning, clearing through the afternoon. The 10 percent rain chance applies to the early part of the day. Monday 15 cools further to 25°C with light cloud and fresh northerly winds at 20 km/h, making it the most comfortable day of the period for active outdoor pursuits.
Tuesday 16 and Wednesday 17 finish the forecast period at 26°C under cloudier skies. Tuesday carries a 15 percent rain probability through the afternoon and evening, with light cloud persisting through Wednesday and a 5 percent rain chance. Both days remain comfortable for beach and pool time, but anything reliant on prolonged direct sunshine may be slightly limited by the cloud cover.
Conditions Across the Island
Coastal resorts including Puerto del Carmen, Playa Blanca and Costa Teguise will track closely with the Arrecife forecast. The northerly trade winds developing from Saturday onwards will be felt most acutely along the north and east coasts, including Famara, where conditions will be ideal for windsurfing and kitesurfing through much of the period. The south coast resorts remain sheltered and will see slightly higher effective temperatures than the headline figures suggest.
Sea temperatures around the island are now climbing into the low 20s, with the south coast warming up noticeably as summer approaches. Inland and sheltered locations may feel marginally warmer through the day than the coastal figures, and the volcanic interior continues to be the warmest part of the island during the middle of the day.
Sun Safety Still the Priority
With UV at very high to extreme levels across the first four days of the period, sun safety remains the priority despite the more moderate air temperatures. Sunscreen of factor 30 or higher should be applied generously and reapplied every two hours, with more frequent application after swimming or heavy perspiration. Friday's UV 11 reading in particular calls for treating the middle of the day with the same caution as during a proper heatwave, with shade or sheltered pool areas preferred between 11am and 4pm.
Lightweight, loose-fitting clothing, a wide-brimmed hat and good quality UV-blocking sunglasses are sensible additions to the daily routine. Children, older visitors and anyone with fair skin should pay particular attention to limiting direct exposure during the middle of the day. Water intake should remain regular even with the cooler air, particularly for anyone undertaking sustained outdoor activity.
What This Means for Activities and Excursions
The conditions across the weekend are excellent for beach days, pool time, water sports and sea-based excursions, with Friday and Saturday offering the most reliably sunny periods of the week. The cooler temperatures from Monday onwards actually make sustained outdoor activity more enjoyable than during last month's peak heat, with hiking, cycling and longer walking routes through Timanfaya, La Geria and the northern routes around Haría all comfortable through the day.
For boat trips, water sports and ferry connections to La Graciosa, the moderate trade wind speeds across the period should not cause significant disruption, although Sunday and Monday will be the breeziest days. Tuesday and Wednesday's cloudier conditions are unlikely to affect outdoor plans materially, with the rain probabilities low enough that most beach and excursion bookings should run as scheduled.
Heading Towards a Calmer Mid-June
After the dramatic weather swings of late May and early June, including the 34°C heatwave, the wind alert that forced the Sonidos Líquidos festival cancellation last weekend, and the brief unsettled spell at the start of this week, the forecast points to a return to more typical Lanzarote conditions through the middle of June. Temperatures in the high 20s, steady trade winds, mostly clear skies and the strong UV that comes with all of those things together is exactly what the island is known for at this time of year.
AEMET continues to monitor conditions across the archipelago and updated forecasts will be published throughout the period. Visitors planning activities are advised to check the latest information directly, particularly if relying on specific weather conditions for excursions or outdoor events.
